content: /*
   * 支付宝开放平台API
   * 支付宝开放平台v3协议文档
   *
   * The version of the OpenAPI document: 2025-08-26
   * 
   *
   * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
   * https://openapi-generator.tech
   * Do not edit the class manually.
   */
  
  
  package com.alipay.v3.model;
  
  import java.util.Objects;
  import java.util.Arrays;
  import com.google.gson.TypeAdapter;
  import com.google.gson.annotations.JsonAdapter;
  import com.google.gson.annotations.SerializedName;
  import com.google.gson.stream.JsonReader;
  import com.google.gson.stream.JsonWriter;
  import io.swagger.annotations.ApiModel;
  import io.swagger.annotations.ApiModelProperty;
  import java.io.IOException;
  
  import com.google.gson.Gson;
  import com.google.gson.GsonBuilder;
  import com.google.gson.JsonArray;
  import com.google.gson.JsonDeserializationContext;
  import com.google.gson.JsonDeserializer;
  import com.google.gson.JsonElement;
  import com.google.gson.JsonObject;
  import com.google.gson.JsonParseException;
  import com.google.gson.TypeAdapterFactory;
  import com.google.gson.reflect.TypeToken;
  
  import java.lang.reflect.Type;
  import java.util.HashMap;
  import java.util.HashSet;
  import java.util.Map;
  import java.util.Map.Entry;
  import java.util.Set;
  
  import com.alipay.v3.JSON;
  
  /**
   * AlipayEcoEduKtBillingModifyModel
   */
  @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen")
  public class AlipayEcoEduKtBillingModifyModel {
    public static final String SERIALIZED_NAME_BANK_SUCCESS = "bank_success";
    @SerializedName(SERIALIZED_NAME_BANK_SUCCESS)
    private String bankSuccess;
  
    public static final String SERIALIZED_NAME_BUYER_LOGON_ID = "buyer_logon_id";
    @SerializedName(SERIALIZED_NAME_BUYER_LOGON_ID)
    private String buyerLogonId;
  
    public static final String SERIALIZED_NAME_BUYER_USER_ID = "buyer_user_id";
    @SerializedName(SERIALIZED_NAME_BUYER_USER_ID)
    private String buyerUserId;
  
    public static final String SERIALIZED_NAME_BUYER_USER_OPEN_ID = "buyer_user_open_id";
    @SerializedName(SERIALIZED_NAME_BUYER_USER_OPEN_ID)
    private String buyerUserOpenId;
  
    public static final String SERIALIZED_NAME_FUND_CHANGE = "fund_change";
    @SerializedName(SERIALIZED_NAME_FUND_CHANGE)
    private String fundChange;
  
    public static final String SERIALIZED_NAME_GMT_REFUND = "gmt_refund";
    @SerializedName(SERIALIZED_NAME_GMT_REFUND)
    private String gmtRefund;
  
    public static final String SERIALIZED_NAME_OUT_REQUEST_NO = "out_request_no";
    @SerializedName(SERIALIZED_NAME_OUT_REQUEST_NO)
    private String outRequestNo;
  
    public static final String SERIALIZED_NAME_OUT_TRADE_NO = "out_trade_no";
    @SerializedName(SERIALIZED_NAME_OUT_TRADE_NO)
    private String outTradeNo;
  
    public static final String SERIALIZED_NAME_REFUND_AMOUNT = "refund_amount";
    @SerializedName(SERIALIZED_NAME_REFUND_AMOUNT)
    private String refundAmount;
  
    public static final String SERIALIZED_NAME_REFUND_DETAIL_ITEM_LIST = "refund_detail_item_list";
    @SerializedName(SERIALIZED_NAME_REFUND_DETAIL_ITEM_LIST)
    private String refundDetailItemList;
  
    public static final String SERIALIZED_NAME_REFUND_REASON = "refund_reason";
    @SerializedName(SERIALIZED_NAME_REFUND_REASON)
    private String refundReason;
  
    public static final String SERIALIZED_NAME_STATUS = "status";
    @SerializedName(SERIALIZED_NAME_STATUS)
    private String status;
  
    public static final String SERIALIZED_NAME_TRADE_NO = "trade_no";
    @SerializedName(SERIALIZED_NAME_TRADE_NO)
    private String tradeNo;
  
    public AlipayEcoEduKtBillingModifyModel() { 
    }
  
    public AlipayEcoEduKtBillingModifyModel bankSuccess(String bankSuccess) {
      
      this.bankSuccess = bankSuccess;
      return this;
    }
  
     /**
     * 成功Y，失败N
     * @return bankSuccess
    **/
    @javax.annotation.Nullable
    @ApiModelProperty(example = "Y", value = "成功Y，失败N")
  
    public String getBankSuccess() {
      return bankSuccess;
    }
  
  
    public void setBankSuccess(String bankSuccess) {
      this.bankSuccess = bankSuccess;
    }
  
  
    public AlipayEcoEduKtBillingModifyModel buyerLogonId(String buyerLogonId) {
      
      this.buyerLogonId = buyerLogonId;
      return this;
    }
  
     /**
     * 退款时，支付宝返回的用户的登录id
     * @return buyerLogonId
    **/
    @javax.annotation.Nullable
    @ApiModelProperty(example = "159****5620", value = "退款时，支付宝返回的用户的登录id")
  
    public String getBuyerLogonId() {
      return buyerLogonId;
    }
  
  
    public void setBuyerLogonId(String buyerLogonId) {
      this.buyerLogonId = buyerLogonId;
    }
  
  
    public AlipayEcoEduKtBillingModifyModel buyerUserId(String buyerUserId) {
      
      this.buyerUserId = buyerUserId;
      return this;
    }
  
     /**
     * 支付宝返回的买家支付宝用户id
     * @return buyerUserId
    **/
    @javax.annotation.Nullable
    @ApiModelProperty(example = "2088101117955611", value = "支付宝返回的买家支付宝用户id")
  
    public String getBuyerUserId() {
      return buyerUserId;
    }
  
  
    public void setBuyerUserId(String buyerUserId) {
      this.buyerUserId = buyerUserId;
    }
  
  
    public AlipayEcoEduKtBillingModifyModel buyerUserOpenId(String buyerUserOpenId) {
      
      this.buyerUserOpenId = buyerUserOpenId;
      return this;
    }
  
     /**
     * 支付宝返回的买家支付宝用户id加密后信息
     * @return buyerUserOpenId
    **/
    @javax.annotation.Nullable
    @ApiModelProperty(example = "074a1CcTG1LelxKe4xQC0zgNdId0nxi95b5lsNpazWYoCo5", value = "支付宝返回的买家支付宝用户id加密后信息")
  
    public String getBuyerUserOpenId() {
      return buyerUserOpenId;
    }
  
  
    public void setBuyerUserOpenId(String buyerUserOpenId) {
      this.buyerUserOpenId = buyerUserOpenId;
    }
  
  
    public AlipayEcoEduKtBillingModifyModel fundChange(String fundChange) {
      
      this.fundChange = fundChange;
      return this;
    }
  
     /**
     * 本次退款是否发生了资金变化
     * @return fundChange
    **/
    @javax.annotation.Nullable
    @ApiModelProperty(example = "Y", value = "本次退款是否发生了资金变化")
  
    public String getFundChange() {
      return fundChange;
    }
  
  
    public void setFundChange(String fundChange) {
      this.fundChange = fundChange;
    }
  
  
    public AlipayEcoEduKtBillingModifyModel gmtRefund(String gmtRefund) {
      
      this.gmtRefund = gmtRefund;
      return this;
    }
  
     /**
     * 支付宝返回的退款时间，而不是商户退款申请的时间
     * @return gmtRefund
    **/
    @javax.annotation.Nullable
    @ApiModelProperty(example = "2015-11-27 15:45:57", value = "支付宝返回的退款时间，而不是商户退款申请的时间")
  
    public String getGmtRefund() {
      return gmtRefund;
    }
  
  
    public void setGmtRefund(String gmtRefund) {
      this.gmtRefund = gmtRefund;
    }
  
  
    public AlipayEcoEduKtBillingModifyModel outRequestNo(String outRequestNo) {
      
      this.outRequestNo = outRequestNo;
      return this;
    }
  
     /**
     * 标识一次退款请求，同一笔交易多次退款需要保证唯一，如需部分退款，则此参数必传。（若退款时填写，则同步退款状态时也必须填写）
     * @return outRequestNo
    **/
    @javax.annotation.Nullable
    @ApiModelProperty(example = "HZ01RF001", value = "标识一次退款请求，同一笔交易多次退款需要保证唯一，如需部分退款，则此参数必传。（若退款时填写，则同步退款状态时也必须填写）")
  
    public String getOutRequestNo() {
      return outRequestNo;
    }
  
  
    public void setOutRequestNo(String outRequestNo) {
      this.outRequestNo = outRequestNo;
    }
  
  
    public AlipayEcoEduKtBillingModifyModel outTradeNo(String outTradeNo) {
      
      this.outTradeNo = outTradeNo;
      return this;
    }
  
     /**
     * isv系统的订单号
     * @return outTradeNo
    **/
    @javax.annotation.Nullable
    @ApiModelProperty(example = "20160101909909354354354", value = "isv系统的订单号")
  
    public String getOutTradeNo() {
      return outTradeNo;
    }
  
  
    public void setOutTradeNo(String outTradeNo) {
      this.outTradeNo = outTradeNo;
    }
  
  
    public AlipayEcoEduKtBillingModifyModel refundAmount(String refundAmount) {
      
      this.refundAmount = refundAmount;
      return this;
    }
  
     /**
     * 需要退款的金额，该金额不能大于订单金额,单位为元，支持两位小数
     * @return refundAmount
    **/
    @javax.annotation.Nullable
    @ApiModelProperty(example = "200.12", value = "需要退款的金额，该金额不能大于订单金额,单位为元，支持两位小数")
  
    public String getRefundAmount() {
      return refundAmount;
    }
  
  
    public void setRefundAmount(String refundAmount) {
      this.refundAmount = refundAmount;
    }
  
  
    public AlipayEcoEduKtBillingModifyModel refundDetailItemList(String refundDetailItemList) {
      
      this.refundDetailItemList = refundDetailItemList;
      return this;
    }
  
     /**
     * 支付宝返回的退款资金渠道，json格式字符串
     * @return refundDetailItemList
    **/
    @javax.annotation.Nullable
    @ApiModelProperty(example = "{   \"fund_channel\":\"ALIPAYACCOUNT\",   \"amount\":12.00,   \"real_amount\":12.00     }", value = "支付宝返回的退款资金渠道，json格式字符串")
  
    public String getRefundDetailItemList() {
      return refundDetailItemList;
    }
  
  
    public void setRefundDetailItemList(String refundDetailItemList) {
      this.refundDetailItemList = refundDetailItemList;
    }
  
  
    public AlipayEcoEduKtBillingModifyModel refundReason(String refundReason) {
      
      this.refundReason = refundReason;
      return this;
    }
  
     /**
     * 退款原因，商家根据客户实际退款原因填写（若退款时填写，则同步退款状态时也必须填写）
     * @return refundReason
    **/
    @javax.annotation.Nullable
    @ApiModelProperty(example = "正常退款", value = "退款原因，商家根据客户实际退款原因填写（若退款时填写，则同步退款状态时也必须填写）")
  
    public String getRefundReason() {
      return refundReason;
    }
  
  
    public void setRefundReason(String refundReason) {
      this.refundReason = refundReason;
    }
  
  
    public AlipayEcoEduKtBillingModifyModel status(String status) {
      
      this.status = status;
      return this;
    }
  
     /**
     * 状态：1:缴费成功，2:关闭账单，3、退费  如果为退款状态，需要填写fund_change,   refund_amount, refund_reason,  out_request_no, buyer_logon_id,  gmt_refund,  buyer_user_id, refund_detail_item_list;  4、同步网商返回的状态,如果是网商银行的账单，bank_success这个字段必填
     * @return status
    **/
    @javax.annotation.Nullable
    @ApiModelProperty(example = "1", value = "状态：1:缴费成功，2:关闭账单，3、退费  如果为退款状态，需要填写fund_change,   refund_amount, refund_reason,  out_request_no, buyer_logon_id,  gmt_refund,  buyer_user_id, refund_detail_item_list;  4、同步网商返回的状态,如果是网商银行的账单，bank_success这个字段必填")
  
    public String getStatus() {
      return status;
    }
  
  
    public void setStatus(String status) {
      this.status = status;
    }
  
  
    public AlipayEcoEduKtBillingModifyModel tradeNo(String tradeNo) {
      
      this.tradeNo = tradeNo;
      return this;
    }
  
     /**
     * 支付宝返回的交易号
     * @return tradeNo
    **/
    @javax.annotation.Nullable
    @ApiModelProperty(example = "2014112611001004680073956707", value = "支付宝返回的交易号")
  
    public String getTradeNo() {
      return tradeNo;
    }
  
  
    public void setTradeNo(String tradeNo) {
      this.tradeNo = tradeNo;
    }
  
    /**
     * A container for additional, undeclared properties.
     * This is a holder for any undeclared properties as specified with
     * the 'additionalProperties' keyword in the OAS document.
     */
    private Map<String, Object> additionalProperties;
  
    /**
     * Set the additional (undeclared) property with the specified name and value.
     * If the property does not already exist, create it otherwise replace it.
     *
     * @param key name of the property
     * @param value value of the property
     * @return the AlipayEcoEduKtBillingModifyModel instance itself
     */
    public AlipayEcoEduKtBillingModifyModel putAdditionalProperty(String key, Object value) {
      if (this.additionalProperties == null) {
          this.additionalProperties = new HashMap<String, Object>();
      }
      this.additionalProperties.put(key, value);
      return this;
    }
  
    /**
     * Return the additional (undeclared) property.
     *
     * @return a map of objects
     */
    public Map<String, Object> getAdditionalProperties() {
      return additionalProperties;
    }
  
    /**
     * Return the additional (undeclared) property with the specified name.
     *
     * @param key name of the property
     * @return an object
     */
    public Object getAdditionalProperty(String key) {
      if (this.additionalProperties == null) {
          return null;
      }
      return this.additionalProperties.get(key);
    }
  
  
    @Override
    public boolean equals(Object o) {
      if (this == o) {
        return true;
      }
      if (o == null || getClass() != o.getClass()) {
        return false;
      }
      AlipayEcoEduKtBillingModifyModel alipayEcoEduKtBillingModifyModel = (AlipayEcoEduKtBillingModifyModel) o;
      return Objects.equals(this.bankSuccess, alipayEcoEduKtBillingModifyModel.bankSuccess) &&
          Objects.equals(this.buyerLogonId, alipayEcoEduKtBillingModifyModel.buyerLogonId) &&
          Objects.equals(this.buyerUserId, alipayEcoEduKtBillingModifyModel.buyerUserId) &&
          Objects.equals(this.buyerUserOpenId, alipayEcoEduKtBillingModifyModel.buyerUserOpenId) &&
          Objects.equals(this.fundChange, alipayEcoEduKtBillingModifyModel.fundChange) &&
          Objects.equals(this.gmtRefund, alipayEcoEduKtBillingModifyModel.gmtRefund) &&
          Objects.equals(this.outRequestNo, alipayEcoEduKtBillingModifyModel.outRequestNo) &&
          Objects.equals(this.outTradeNo, alipayEcoEduKtBillingModifyModel.outTradeNo) &&
          Objects.equals(this.refundAmount, alipayEcoEduKtBillingModifyModel.refundAmount) &&
          Objects.equals(this.refundDetailItemList, alipayEcoEduKtBillingModifyModel.refundDetailItemList) &&
          Objects.equals(this.refundReason, alipayEcoEduKtBillingModifyModel.refundReason) &&
          Objects.equals(this.status, alipayEcoEduKtBillingModifyModel.status) &&
          Objects.equals(this.tradeNo, alipayEcoEduKtBillingModifyModel.tradeNo)&&
          Objects.equals(this.additionalProperties, alipayEcoEduKtBillingModifyModel.additionalProperties);
    }
  
    @Override
    public int hashCode() {
      return Objects.hash(bankSuccess, buyerLogonId, buyerUserId, buyerUserOpenId, fundChange, gmtRefund, outRequestNo, outTradeNo, refundAmount, refundDetailItemList, refundReason, status, tradeNo, additionalProperties);
    }
  
    @Override
    public String toString() {
      StringBuilder sb = new StringBuilder();
      sb.append("class AlipayEcoEduKtBillingModifyModel {\n");
      sb.append("    bankSuccess: ").append(toIndentedString(bankSuccess)).append("\n");
      sb.append("    buyerLogonId: ").append(toIndentedString(buyerLogonId)).append("\n");
      sb.append("    buyerUserId: ").append(toIndentedString(buyerUserId)).append("\n");
      sb.append("    buyerUserOpenId: ").append(toIndentedString(buyerUserOpenId)).append("\n");
      sb.append("    fundChange: ").append(toIndentedString(fundChange)).append("\n");
      sb.append("    gmtRefund: ").append(toIndentedString(gmtRefund)).append("\n");
      sb.append("    outRequestNo: ").append(toIndentedString(outRequestNo)).append("\n");
      sb.append("    outTradeNo: ").append(toIndentedString(outTradeNo)).append("\n");
      sb.append("    refundAmount: ").append(toIndentedString(refundAmount)).append("\n");
      sb.append("    refundDetailItemList: ").append(toIndentedString(refundDetailItemList)).append("\n");
      sb.append("    refundReason: ").append(toIndentedString(refundReason)).append("\n");
      sb.append("    status: ").append(toIndentedString(status)).append("\n");
      sb.append("    tradeNo: ").append(toIndentedString(tradeNo)).append("\n");
      sb.append("    additionalProperties: ").append(toIndentedString(additionalProperties)).append("\n");
      sb.append("}");
      return sb.toString();
    }
  
    /**
     * Convert the given object to string with each line indented by 4 spaces
     * (except the first line).
     */
    private String toIndentedString(Object o) {
      if (o == null) {
        return "null";
      }
      return o.toString().replace("\n", "\n    ");
    }
  
  
    public static HashSet<String> openapiFields;
    public static HashSet<String> openapiRequiredFields;
  
    static {
      // a set of all properties/fields (JSON key names)
      openapiFields = new HashSet<String>();
      openapiFields.add("bank_success");
      openapiFields.add("buyer_logon_id");
      openapiFields.add("buyer_user_id");
      openapiFields.add("buyer_user_open_id");
      openapiFields.add("fund_change");
      openapiFields.add("gmt_refund");
      openapiFields.add("out_request_no");
      openapiFields.add("out_trade_no");
      openapiFields.add("refund_amount");
      openapiFields.add("refund_detail_item_list");
      openapiFields.add("refund_reason");
      openapiFields.add("status");
      openapiFields.add("trade_no");
  
      // a set of required properties/fields (JSON key names)
      openapiRequiredFields = new HashSet<String>();
    }
  
   /**
    * Validates the JSON Object and throws an exception if issues found
    *
    * @param jsonObj JSON Object
    * @throws IOException if the JSON Object is invalid with respect to AlipayEcoEduKtBillingModifyModel
    */
    public static void validateJsonObject(JsonObject jsonObj) throws IOException {
        if (jsonObj == null) {
          if (AlipayEcoEduKtBillingModifyModel.openapiRequiredFields.isEmpty()) {
            return;
          } else { // has required fields
            throw new IllegalArgumentException(String.format("The required field(s) %s in AlipayEcoEduKtBillingModifyModel is not found in the empty JSON string", AlipayEcoEduKtBillingModifyModel.openapiRequiredFields.toString()));
          }
        }
        if (jsonObj.get("bank_success") != null && !jsonObj.get("bank_success").isJsonPrimitive()) {
          throw new IllegalArgumentException(String.format("Expected the field `bank_success` to be a primitive type in the JSON string but got `%s`", jsonObj.get("bank_success").toString()));
        }
        if (jsonObj.get("buyer_logon_id") != null && !jsonObj.get("buyer_logon_id").isJsonPrimitive()) {
          throw new IllegalArgumentException(String.format("Expected the field `buyer_logon_id` to be a primitive type in the JSON string but got `%s`", jsonObj.get("buyer_logon_id").toString()));
        }
        if (jsonObj.get("buyer_user_id") != null && !jsonObj.get("buyer_user_id").isJsonPrimitive()) {
          throw new IllegalArgumentException(String.format("Expected the field `buyer_user_id` to be a primitive type in the JSON string but got `%s`", jsonObj.get("buyer_user_id").toString()));
        }
        if (jsonObj.get("buyer_user_open_id") != null && !jsonObj.get("buyer_user_open_id").isJsonPrimitive()) {
          throw new IllegalArgumentException(String.format("Expected the field `buyer_user_open_id` to be a primitive type in the JSON string but got `%s`", jsonObj.get("buyer_user_open_id").toString()));
        }
        if (jsonObj.get("fund_change") != null && !jsonObj.get("fund_change").isJsonPrimitive()) {
          throw new IllegalArgumentException(String.format("Expected the field `fund_change` to be a primitive type in the JSON string but got `%s`", jsonObj.get("fund_change").toString()));
        }
        if (jsonObj.get("gmt_refund") != null && !jsonObj.get("gmt_refund").isJsonPrimitive()) {
          throw new IllegalArgumentException(String.format("Expected the field `gmt_refund` to be a primitive type in the JSON string but got `%s`", jsonObj.get("gmt_refund").toString()));
        }
        if (jsonObj.get("out_request_no") != null && !jsonObj.get("out_request_no").isJsonPrimitive()) {
          throw new IllegalArgumentException(String.format("Expected the field `out_request_no` to be a primitive type in the JSON string but got `%s`", jsonObj.get("out_request_no").toString()));
        }
        if (jsonObj.get("out_trade_no") != null && !jsonObj.get("out_trade_no").isJsonPrimitive()) {
          throw new IllegalArgumentException(String.format("Expected the field `out_trade_no` to be a primitive type in the JSON string but got `%s`", jsonObj.get("out_trade_no").toString()));
        }
        if (jsonObj.get("refund_amount") != null && !jsonObj.get("refund_amount").isJsonPrimitive()) {
          throw new IllegalArgumentException(String.format("Expected the field `refund_amount` to be a primitive type in the JSON string but got `%s`", jsonObj.get("refund_amount").toString()));
        }
        if (jsonObj.get("refund_detail_item_list") != null && !jsonObj.get("refund_detail_item_list").isJsonPrimitive()) {
          throw new IllegalArgumentException(String.format("Expected the field `refund_detail_item_list` to be a primitive type in the JSON string but got `%s`", jsonObj.get("refund_detail_item_list").toString()));
        }
        if (jsonObj.get("refund_reason") != null && !jsonObj.get("refund_reason").isJsonPrimitive()) {
          throw new IllegalArgumentException(String.format("Expected the field `refund_reason` to be a primitive type in the JSON string but got `%s`", jsonObj.get("refund_reason").toString()));
        }
        if (jsonObj.get("status") != null && !jsonObj.get("status").isJsonPrimitive()) {
          throw new IllegalArgumentException(String.format("Expected the field `status` to be a primitive type in the JSON string but got `%s`", jsonObj.get("status").toString()));
        }
        if (jsonObj.get("trade_no") != null && !jsonObj.get("trade_no").isJsonPrimitive()) {
          throw new IllegalArgumentException(String.format("Expected the field `trade_no` to be a primitive type in the JSON string but got `%s`", jsonObj.get("trade_no").toString()));
        }
    }
  
    public static class CustomTypeAdapterFactory implements TypeAdapterFactory {
      @SuppressWarnings("unchecked")
      @Override
      public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> type) {
         if (!AlipayEcoEduKtBillingModifyModel.class.isAssignableFrom(type.getRawType())) {
           return null; // this class only serializes 'AlipayEcoEduKtBillingModifyModel' and its subtypes
         }
         final TypeAdapter<JsonElement> elementAdapter = gson.getAdapter(JsonElement.class);
         final TypeAdapter<AlipayEcoEduKtBillingModifyModel> thisAdapter
                          = gson.getDelegateAdapter(this, TypeToken.get(AlipayEcoEduKtBillingModifyModel.class));
  
         return (TypeAdapter<T>) new TypeAdapter<AlipayEcoEduKtBillingModifyModel>() {
             @Override
             public void write(JsonWriter out, AlipayEcoEduKtBillingModifyModel value) throws IOException {
               JsonObject obj = thisAdapter.toJsonTree(value).getAsJsonObject();
               obj.remove("additionalProperties");
               // serialize additonal properties
               if (value.getAdditionalProperties() != null) {
                 for (Map.Entry<String, Object> entry : value.getAdditionalProperties().entrySet()) {
                   if (entry.getValue() instanceof String)
                     obj.addProperty(entry.getKey(), (String) entry.getValue());
                   else if (entry.getValue() instanceof Number)
                     obj.addProperty(entry.getKey(), (Number) entry.getValue());
                   else if (entry.getValue() instanceof Boolean)
                     obj.addProperty(entry.getKey(), (Boolean) entry.getValue());
                   else if (entry.getValue() instanceof Character)
                     obj.addProperty(entry.getKey(), (Character) entry.getValue());
                   else {
                     obj.add(entry.getKey(), gson.toJsonTree(entry.getValue()).getAsJsonObject());
                   }
                 }
               }
               elementAdapter.write(out, obj);
             }
  
             @Override
             public AlipayEcoEduKtBillingModifyModel read(JsonReader in) throws IOException {
               JsonObject jsonObj = elementAdapter.read(in).getAsJsonObject();
               validateJsonObject(jsonObj);
               // store additional fields in the deserialized instance
               AlipayEcoEduKtBillingModifyModel instance = thisAdapter.fromJsonTree(jsonObj);
               for (Map.Entry<String, JsonElement> entry : jsonObj.entrySet()) {
                 if (!openapiFields.contains(entry.getKey())) {
                   if (entry.getValue().isJsonPrimitive()) { // primitive type
                     if (entry.getValue().getAsJsonPrimitive().isString())
                       instance.putAdditionalProperty(entry.getKey(), entry.getValue().getAsString());
                     else if (entry.getValue().getAsJsonPrimitive().isNumber())
                       instance.putAdditionalProperty(entry.getKey(), entry.getValue().getAsNumber());
                     else if (entry.getValue().getAsJsonPrimitive().isBoolean())
                       instance.putAdditionalProperty(entry.getKey(), entry.getValue().getAsBoolean());
                     else
                       throw new IllegalArgumentException(String.format("The field `%s` has unknown primitive type. Value: %s", entry.getKey(), entry.getValue().toString()));
                   } else { // non-primitive type
                     instance.putAdditionalProperty(entry.getKey(), gson.fromJson(entry.getValue(), HashMap.class));
                   }
                 }
               }
               return instance;
             }
  
         }.nullSafe();
      }
    }
  
   /**
    * Create an instance of AlipayEcoEduKtBillingModifyModel given an JSON string
    *
    * @param jsonString JSON string
    * @return An instance of AlipayEcoEduKtBillingModifyModel
    * @throws IOException if the JSON string is invalid with respect to AlipayEcoEduKtBillingModifyModel
    */
    public static AlipayEcoEduKtBillingModifyModel fromJson(String jsonString) throws IOException {
      return JSON.getGson().fromJson(jsonString, AlipayEcoEduKtBillingModifyModel.class);
    }
  
   /**
    * Convert an instance of AlipayEcoEduKtBillingModifyModel to an JSON string
    *
    * @return JSON string
    */
    public String toJson() {
      return JSON.getGson().toJson(this);
    }
  }
  
  